Google co-founder Larry page built his own book scanner, and the initial process required having someone manually turn its pages in rhythm, one at a time, according to the pace of a metronome.

谷歌联合创始人开发了自己的书籍扫描仪，刚开始时还要人跟着扫描仪的节奏来翻页。

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They gave sites a resulting "Page rank" (named for Larry, not Web pages).

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